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I could edit the firmware but I like this just in case there are thermocouple issues.
I can also point a heat gun at it for a minute.
You can check what the value actually would read as if you unplug the thermistor (as that's what it's a protection against), and as long as you aren't near that reducing MINTEMP should be perfectly fine. For example, mine reports something like -50C.
If you're cold, they're cold.
Bring 'em inside, folks.
Unless resin, then becareful.
Or doomcube, those should probably be in detached buildings. Or you like to print filaments that are high on fumes and don't have a great way to vent.
How cold is the garage?
~9C. The MINTEMP is 10C, I think. I heat it to 11C with a heat gun and it works fine.
Honestly makes a lot of sense. The ink probably turns into a solid at too low of a temp.
This is a 3D Printing sub. We print with 215°C molten plastic. Putting the printer into an enclosure is usually enough to heat itself, even in subzero conditions.